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[presh-uh-rahyzd] /ˈprɛʃ əˌraɪzd/
brought to and maintained at an atmospheric pressure higher than that of the surroundings:
cooking with pressurized steam.
maintained at an air pressure comfortable for breathing:
a pressurized cabin and cockpit; a pressurized suit for diving.
Informal. subject or subjected to undue pressure or harassment:
the pressurized milieu of big business.
Origin of pressurized
First recorded in 1935-40; pressurize + -ed2
Related forms
unpressurized, adjective


[presh-uh-rahyz] /ˈprɛʃ əˌraɪz/
verb (used with object), pressurized, pressurizing.
to raise the internal atmospheric pressure of to the required or desired level:
to pressurize an astronaut's spacesuit before a walk in space.
to maintain normal air pressure in (the cockpit or cabin of an airplane) at high altitudes.
to apply pressure to (a gas or liquid); supercharge.
to pressure-cook.
Also, especially British, pressurise.
First recorded in 1940-45; pressure + -ize
Related forms
pressurizer, noun
repressurize, verb, repressurized, repressurizing. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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Examples from the Web for pressurized
Contemporary Examples
Historical Examples
  • When they were pressurized, he opened the hatch and they clambered out onto the plain.

    First on the Moon Jeff Sutton
  • He nodded to Nagel, snapped his face plate shut and pressurized his suit.

    First on the Moon Jeff Sutton
  • Cade, who was in the pressurized control room without a suit on, kept working the switch back and forth.

    All Day September Roger Kuykendall
  • Crag debated the problem while they pressurized the cabin and removed their suits.

    First on the Moon Jeff Sutton
  • The sensing unit was in an inner core, surrounded by an atmosphere of pressurized helium.

    The Golden Skull John Blaine
  • The pressurized atmosphere gone, the water then is able to pour in through the same opening, flooding the workings.

  • He set course for Mojave and was nearly ready to transmit when a bark of static filled the pressurized control bubble.

    A Fine Fix R. C. Noll
  • The cabin was pressurized, though it did not attempt to simulate sea-level pressure.

    Space Platform Murray Leinster
  • The soft whistle of oxygen escaped from pressurized cylinders.

    Rich Living Michael Cathal
British Dictionary definitions for pressurized


verb (transitive)
to increase the pressure in (an enclosure, such as an aircraft cabin) in order to maintain approximately atmospheric pressure when the external pressure is low
to increase pressure on (a fluid)
to make insistent demands of (someone); coerce
Derived Forms
pressurization, pressurisation, noun
pressurizer, pressuriser, noun
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for pressurized



1938 (implied in pressurized), from pressure (n.) + -ize. Related: Pressurizing.

Online Etymology Dictionary, © 2010 Douglas Harper
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